Coaster-brake.



Patented Aug. l2, |902. C. GLOVER. COASTER BRAKE.

(Application led June 11, 1901.) (no Model.)

l* v. 3 f a i wnNEssEs; y 73 @d Z GNZVENTOR'.

res over $244 f @y BY )l N. f @im ATTORNEY UNITED STATES CHARLES GLOVER, OF NEW BRITAIN,

CONNECTICUT, ASSIGNOR TO P. t F.

CORBIN, A CORPORATION OF CONNECTICUT.

COASTER-BRAKE.

SPECIFICATION forming part of Letters Patent lNo. 706,549, dated August 12,1902.

Application filed June 11,1901.

To @ZZ whom it may concern.-

Be it knownf that I, `CHARLES GfLovERpaA citizen of the United States, residing at New Britain, Hartford county, Connecticut,'havev invented certain new and j useful Improvements in Coaster-Brakes, of which the following is a full, clear, and exact description.

My invention relates to brake mechanism for coaster-brakes and like devices.

The function of the coaster-brake as used upon the bicycle and other vehicles is to permit the driver to cease pedaling Whenever he so desires, allowing the machine to coast along freely under its own momentum. Its construction is such that the user may at any time by reversing the direction of the pedalcranks, or, as it is called,back-pedaling, throw in brake mechanism, which will coact with some part of the moving mechanism in such manner as to check the advance of the machine or slow it down to any desired speed.

My invention as claimed herein consists mainly in the improvement of the' brake mechanism.

The obj ects I have sought to attain are` simplicity, durability, eifectiveness, ease and certainty of action, quickness,A smoothness, and evenness ofoperation under 'all conditions.

In the accompanyingdrawings, Figure 1 is -partly a projection and partly a vertical sectionof a coaster-brake such as used upon bicycles and the like. Fig. 2 is a vertical projection of the brake proper, the wheelhub and shifting mechanism being removed to facilitate the inspection. Fig. 3 is a perspective view of a detail, and Fig. 4 is an end elevation of the detail shown in Fig. 3.

The following detailed description relates to the preferred form of myinvention, which, it is obvious, is susceptible of modification without departing from the spirit and scope of my invention.

1 is a main shaft or aXle.

2 is a gear or sprocket wheel, which will b termed-herein the driven 5 is a Worm carried by the driver 2 and projecting within the hub 19.

7 is a sleeve mounted upon the worm 5. Said sleeve 7 may be shifted from left to right 'serial Nd. 64,698. (No man.)

or fromA right to left, according to the direc- -will be coupled with the hub 19, so as toimpart a corresponding advance movement thereto. Of this mechanism I make no claim herein.

8 is a cone loosely mounted upon the axle 1. This cone 8 will be termed herein the brakeactuator.

9 is a clutch-ring adapted to coact with the brake-actuator 8.

1O 10 are projections on the sleeve 7, taking in recesses in the clutch-ring 9, `so that said parts are incapable of independent rotative movement.

13 is a projection from actuator 8., l

14 is a cam,preferablydouble-acting, pivoted at 141 upon a bracketl.l

16 16 are brake-',shoes.

161 is a hinge-,bearing for Aonereud of each of said brake-shoes; The `other end of each brake-shoe bears against the cam `14.

17 is a spring, preferably bowed, so that the middle portion o f the same will bear against the bearing 161, while the ends will engage the brake-shoes 1616 in such manner as to hold said brake-shoes in retracted position. i

142 is an arm projecting from the cam 14, and 143 is a shoulder preferably formed upon said arm 141, provided to act as a stop to limit the swing of said arm 141 in one direction by impinging against the axle 1 when the brake-shoes are fully retracted. The brakeactuator 8 is adapted to engagewith the arm 142 in such a mannerfor example, through the projection 13-tha't when saidbrake-actuator 8 is turned the cam 14 is tilted, thus forcing the adjacent ends of thebrake-shoes 16 16 away from each other, which shoes be ing hinged at the opposite ends swing apart and bear against the ange 18 of the hub 19 in such manner as to ,frictionally resist the turning of the same. These brake-shoes may be formed of wrought or cast metal, if dethe end of the brakel sired. The construction is such that in the gether', whereupon a continuedI rearward movement of the driver 2 rotates the brake-V actuator 8, which through the projection 13 swings the cam 14, which in turn swings each of the hinged brake-shoes. When the driver is again advanced, the cam 14 returns to the position shown in Fig. 2, the spring 17 drawing said brake-shoes away from the fiange 18,

freeing the hub/19.

VVhatI claim is- 1. In a brake mechanism for coaster-brakes and the like, a stationary block having two recesses therein, two curved brake-shoes, one endof each of said brake-shoes being adapted to fit within said recesses and means to oper-k ate said brake-shoes, substantially as described.

2. A brake mechanism for coaster-brakes and the like, comprising a plurality of hinged brake-shoes, a stationary support therefor, a double acting cam pivotally mounted between the ends of said brake-shoes, an arm projecting fromsaid cam, a shoulder on said arm, a wheel-hub,'an axle, said axle being located in the path of movement of the shoulder on said cam-arm and means for operating said cam, substantially as described.

3. A brake mechanism for coaster-brakes comprising an aXle,a wheel-hub, bearings therefor, brake-shoes adapted to coact with said wheel-hub or an extension thereof, said brake-shoes being hinged upon a stationary support, a pivotally-mounted cam located between the ends of said brake-shoes and adapted to operate both of said brake-shoes,- an arm projecting from said cam and a shoulder on -said arm adapted to impinge against said axle and means to operate said cam, substantially as described.

4. In a brake mechanism for coaster-brakes and the like, a stationary block having two recesses therein, two curved brake-shoes, one end of each of said brake-shoes being adapted to fit within said recesses, and a spring for holding said brake-shoes in their retracted position, and means to operate said brakeshoes, substantially as described.

5. In a brake mechanism for coaster-brakes and the like, a stationary block having two recesses therein, two curved brake-shoes, one end of each of said brake-shoes being adapted to fit within said recesses, and a spring for holding said brake-shoes in their retracted position, said spring engaging said brakeshoes near the ends thereof and means to operate said brake-shoes, substantially as described.

6. In a brake mechanism for coaster-brakes and the like, a stationary block having two recesses therein, two curved brake-shoes, one end of each of said brake-shoes being adapted to iit within said recesses, and a spring for holding said brake-shoes in their retracted position, said spring engaging said brakeshoes near the ends thereof and bearing against the said stationary block and means to operate the brake-shoes.

'7. In a brake mechanism for coaster-brakes and the like, a stationary block having two recesses therein, two curved brake-shoes, one end of each of said brake-shoes being adapted to fit within said recesses, and a spring for holding said brake-shoes in their retracted position, said spring engaging said brakeshoes near the ends thereof and means for operating said brake-shoes consistingof a pivoted cam and actuating-arm.

Signed at New Britain, Connecticut, this 5th day of June, 1901.

CHARLES GLOVER.

Witnesses:

A. I-I.r GARNERDINGER, W. G. BANoRoiu.v 

